[8.x] Stabilize inference endpoint svl search tests for MKI (#201492) (…

…#201507)

# Backport

This will backport the following commits from `main` to `8.x`:
- [Stabilize inference endpoint svl search tests for MKI
(#201492)](#201492)

<!--- Backport version: 8.9.8 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Robert
Oskamp","email":"[email protected]"},"sourceCommit":{"committedDate":"2024-11-23T09:44:01Z","message":"Stabilize
inference endpoint svl search tests for MKI (#201492)\n\n##
Summary\r\n\r\nThis PR stabilizes the inference endpoint serverless
earch UI tests for\r\nMKI runs by waiting for loading to finish after
refreshing the
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inference endpoint svl search tests for MKI (#201492)\n\n##
Summary\r\n\r\nThis PR stabilizes the inference endpoint serverless
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inference endpoint svl search tests for MKI (#201492)\n\n##
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Stabilize inference endpoint svl search tests for MKI (#201492)
(#201495)\n\n# Backport\n\nThis will backport the following commits from
`main` to `8.17`:\n- [Stabilize inference endpoint svl search tests for
MKI\n(#201492)](https://github.com/elastic/kibana/pull/201492)\n\n<!---
Backport version: 9.4.3 -->\n\n### Questions ?\nPlease refer to the
[Backport
tool\ndocumentation](https://github.com/sqren/backport)\n\n<!--BACKPORT
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endpoint svl search tests for MKI
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endpoint serverless\nearch UI tests for\\r\\nMKI runs by waiting for
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endpoint svl search tests for MKI
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Robert Oskamp
<[email protected]>"}},{"branch":"8.x","label":"v8.18.0","labelRegex":"^v8.18.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

x-pack/test_serverless/functional/test_suites/search/inference_management.ts

@@ -16,6 +16,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
     'svlCommonPage',
     'embeddedConsole',
     'svlSearchInferenceManagementPage',
+    'header',
   ]);
   const svlSearchNavigation = getService('svlSearchNavigation');
   const browser = getService('browser');
@@ -66,6 +67,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
       beforeEach(async () => {
         await ml.api.createInferenceEndpoint(endpoint, taskType, modelConfig);
         await browser.refresh();
+        await pageObjects.header.waitUntilLoadingHasFinished();
       });
 
       after(async () => {